Down in the Valley with two or more lore counters on it).
Notable Prerequisites
You are able to play a land this turn.
Steps
Play
Petrified Field.
When
Petrified Field enters the battlefield,
Kodama of the East Tree and
Down in the Valley trigger.
Resolve the
Kodama of the East Tree trigger, putting nothing onto the battlefield.
Holding priority, activate
Petrified Field's second ability by tapping and sacrificing it, returning
Echoing Deeps from your graveyard to your hand.
Resolve the
Down in the Valley trigger, creating a token.
When the token enters the battlefield,
Kodama of the East Tree triggers, putting
Echoing Deeps from your hand onto the battlefield untapped as a copy of
Petrified Field.
When
Echoing Deeps enters the battlefield,
Down in the Valley triggers.
Holding priority, activate
Echoing Deeps using
Petrified Field's second ability by tapping and sacrificing it, returning
Petrified Field from your graveyard to your hand.
Resolve the
Down in the Valley trigger, creating a token.
When the token enters the battlefield,
Kodama of the East Tree triggers, putting
Petrified Field from your hand onto the battlefield.
When
Petrified Field enters the battlefield,
Down in the Valley triggers.
Repeat from step 4.
Notes
An infinite card draw result has been added to this combo due to Cultivator Colossus or a similar card. This likely limits the other results based on the number of cards in your library.
Results
Infinite ETB.
Infinite card draw.
Infinite creature tokens.
Infinite draw triggers.
Infinite landfall triggers.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).